The original MCU + serial port to network port module had a slow serial port and insufficient transmission rate.
Later it was changed to CH395 but it was expensive and took up a lot of space.
Suddenly
Although not all of them belong to the United States, they are all within the sphere of influence of the United States.
IAR, keil mdk, stm ide are blocked, what can I do?
If you use the direct current from the Mean Well power module directly, is there any voltage stabilization circuit? How do you usually deal with it? Add a power filter